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Key Stage 3 Science

What is the definition of a prokaryote? A cell with no nucleus
Is a plant cell eukaryotic? Yes, it has a nucleus
Which type of reproduction involves two gametes? Sexual reproduction
What is the name of the female reproductive organ in plants? Carpel
Name the three parts of a plant cell that are not found in animal cells. Cell Wall, Vacuole, Chloroplast
What is the name of the male gamete in plants? Pollen
What are the two main methods of pollination in flowering plants? Via wind or insects
Where is the embryo formed in a plant after pollination? The ovule
Which type of energy is used in photosynthesis? Light energy
Name three things need for germination Water, oxygen, warmth
What part of a flower does pollen land on and form a pollen tube? Stigma
Cross-pollination is fertilising a flower on a neighbouring plant. True / False TRUE
Write down the word equation for respiration. Glucose + oxygen --> carbon dioxide + water
Which kingdom does the dandelion belong to? Plants
Name part C of this seed Food Store
What is the main feature of a eukaryotic cell? It has a nucleus
Runners in strawberry plants and tubers in potatoes are examples of __________ ____________ in plants Asexual reproduction
Put these stages of the plant reproduction in order: Dispersal, Fertilisation, Germination Pollination Pollination, Fertilisation, Dispersal, Germination
Define variation Differences in characteristics between organisms of the same species.
What is the role of a flower in many plants? Reproductive organ
What is the function of the sepals? Protect the unopened flower
What is the function of the petals? May be brightly coloured to attract insects
What is the functin of the stamen? Male parts of the flower
What is the function of the anther? Produce male sex cells (pollen grains)
What is the function of the stigma? The top of the female part of the flower which collects pollen grains
What is the function of the ovary Produces the female sex cells (contained in the ovules)
What is the function of the nectary? Produce a sugary solution called nectar, which attracts insects
Define "pollination" The fertilisation of flowers by passing on their pollen
Name the 3 main parts of a seed embryo, food store, seed coat
Name 4 things plants compete for light, water, space, minerals in the soil
Define "dispersed" Spread away and apart
Name 4 methods of seed dispersal Wind - Animals (inside) - Animals (outside) - Self-propelled
Is photosynthesis endothermic or exothermic? Endothermic
Name the pigment in chloroplasts that absorbs light. Chlorophyll
State an adaptation of the leaf for efficient photosynthesis. Broad leaves/Thin/Have chlorophyll/Air spaces/Guard cells to regulate stomata opening
How does higher light intensity affect the rate of photosynthesis? Increase
Apart from light and carbon dioxide concentration, name one other limiting factor of photosynthetic rate. Temperature/Chlorophyll levels
Name one use of glucose in plants. Respiration/Make and strenghten cellulose cell wall/Make starch for storage/Make lipids as energy store
What is the word equation for photosynthesis? Water + carbon dioxide -> glucose + oxygen
Name the three organs in a plant Roots, stem, leaf
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